82NM10 Datasheet, PDF (617/671 Pages) Intel Corporation – Intel® NM10 Family Express Chipset

Intel HD Audio Controller Registers (D27:F0)
Bit
Description
15:3
2:0
Reserved.
FIFO Watermark (FIFOW) — R/W. This field indicates the minimum number of bytes
accumulated/free in the FIFO before the controller will start a fetch/eviction of data.
010 = 8B
011 = 16B
100 = 32B (Default)
Others = Unsupported
NOTES:
1.
When the bit field is programmed to an unsupported size, the hardware sets
itself to the default value.
2.
Software must read the bit field to test if the value is supported after setting the
bit field.
18.2.41 SDFIFOS—Stream Descriptor FIFO Size Register
(Intel HD Audio Controller—D27:F0)
Memory Address:Input Stream[0]: HDBAR + 90hAttribute:
Input Stream[1]: HDBAR + B0h
Input Stream[2]: HDBAR + D0h
Input Stream[3]: HDBAR + F0h
Output Stream[0]: HDBAR + 110h
Output Stream[1]: HDBAR + 130h
Output Stream[2]: HDBAR + 150h
Output Stream[3]: HDBAR + 170h
Input: RO
Output: R/W
Default Value:
Input Stream: 0077hSize:16 bits
Output Stream: 00BFh
Datasheet
617